Klaus Knopper is the creator of Knoppix and co-founder of LinuxTag expo. He works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine.com

The long anticipated phenomenon of 3D printing, which the futurists have long identified as a potential “disruptive technology,” truly arrived this month with the appearance of the first 3D-printing controversy: 3D printing of cheap hand guns. Pop science prognosticators who have been bleary-eyed over the “promise” of 3D printing seemed caught off guard by the appearance of the first 3D guns. (You mean this wasn’t just for printing heart valves and Ironman exoskeletons?) At last, 3D printing was not just a quirky popular science oddity, but something that could serve as the fodder for moral arguments – by both sides, and a blogosphere seemingly thrilled to have some new material for speech making and hand wringing.

What is the Raspberry Pi really? A trinket? An educational tool? A very inexpensive computer? Of course, it is all these things, but what is the meaning of Raspberry Pi? I’m not the first journalist to ask.